journal: limit to printing 100 lines by default

logtracker/journal/management/commands/print.py

@@ -15,10 +15,11 @@ class Command(BaseCommand):
 
     def add_arguments(self, parser):
         parser.add_argument("--full", action="store_true")
+        parser.add_argument("-n", "--lines", default=100)
 
     def handle(self, *args, **options):
         _, columns = os.popen("stty size", "r").read().split()
-        for entry in Entry.objects.all():
+        for entry in reversed(Entry.objects.order_by('-timestamp')[:int(options['lines'])]):
             line = "%s %s %s" % (
                 entry.timestamp.strftime("%c"),
                 entry.host,